Measurement and Simulation of Intake Port and In-Cylinder Air Flow of Diesel and Gasoline Engines

2005 ◽  
Author(s):  
Dr.-Ing. H. Tschöke ◽  
Dipl.-Ing. B. Naumann ◽  
Dipl.-Ing. (FH) L. Hartkopf
Keyword(s):  
Air Flow ◽  
Intake Port ◽  
Gasoline Engines

Effect of Air-Flow Organization in Cylinder of Gasoline Engines on Particles Emission

2020 ◽  
pp. 597-608
Author(s):  
Wenzhong Zhao ◽  
Chao Zhang ◽  
Dongyu Qian ◽  
Liangchao Zhang ◽  
Renyu Ruan
Keyword(s):  
Air Flow ◽  
Gasoline Engines

Multi-Input Observer for Estimation of Compressor Flow

2013 ◽  
Author(s):  
Uroš Kalabić ◽  
Ilya Kolmanovsky ◽  
Julia Buckland
Keyword(s):  
Air Flow ◽  
High Gain ◽  
Experimental Results ◽  
Flow Sensor ◽  
Pressure Measurements ◽  
Gasoline Engines ◽  
Cylinder Flow ◽  
Reference Governor

This paper presents a formulation and an application of a high-gain multi-input observer to estimate the compressor flow in turbocharged gasoline engines. Such an observer is desired in vehicles lacking a mass air flow sensor yet in which compressor flow needs to be known; for instance, it is desired in order to apply a reference governor for surge constraint avoidance. In this application, a fast estimate of the compressor flow is required so that the reference governor can take action before the compressor goes into surge. The multi-input observer uses pressure measurements and cylinder flow to estimate the compressor flow. This paper presents the derivation of the observer and both simulation and experimental results showing its feasibility in estimating the compressor flow.

Efficiency and Emissions of Spark Ignition Engine Using Hydrogen and Gasoline Mixtures

2014 ◽  
Vol 1070-1072 ◽  
pp. 1835-1839
Author(s):  
Wei Bo Shi ◽  
Xiu Min Yu
Keyword(s):  
Direct Injection ◽  
Spark Ignition ◽  
Spark Ignition Engine ◽  
Gasoline Direct Injection ◽  
Emissions Reduction ◽  
Intake Port ◽  
Efficiency Improvement ◽  
Gasoline Engines ◽  
Recent Developments ◽  
Injection Location

This paper reviews and summarizes recent developments in hydrogen and gasoline mixtures powered engine research. According to the hydrogen and gasoline injection location, engine can be divided into three categories: hydrogen intake port injection, gasoline direct injection; Hydrogen direct injection, gasoline intake port injection; hydrogen and gasoline intake port injection. Different gasoline and hydrogen injection location determines the engines have different advantages. Follow an overview of spark ignition engine using hydrogen and gasoline mixtures, general trade-off when operating engine on hydrogen and gasoline mixtures are analyzed and highlights regarding accomplishments in efficiency improvement and emissions reduction are presented. These include estimates of efficiency potential of hydrogen and gasoline engines, fuel economy and emissions.

The Performance Simulation and Optimization Research on Intake Port of Locomotive Diesel Engine

2012 ◽  
Vol 443-444 ◽  
pp. 1007-1013
Author(s):  
Hong Jiang Cui ◽  
Ming Hai Li ◽  
Ying Guan
Keyword(s):  
Diesel Engine ◽  
Flow Condition ◽  
Discharge Coefficient ◽  
Cfd Simulation ◽  
Air Flow ◽  
Three Dimensional ◽  
Engine Performance ◽  
Simulation Method ◽  
Intake Port ◽  
Simulation And Optimization

.In order to manufacture high quality intake port with bigger discharge coefficient and appropriate swirl ratio for diesel engine performance improvement, intake port tests and CFD simulation method were combined together to optimize its structure. The three-dimensional CAD model of intake port was built and was putted into AVL–FIRE platform to do CFD simulation with appropriate turbulence model and calculation method. The detailed air flow information was obtained by CFD simulation. After analyzing, two optimization programs were discussed. This research shows that CFD simulation is a powerful method to design diesel engine intake port; air flow condition is complex in the intake port; intake port structure optimization can increase the discharge coefficient and improve the air flow condition.

Computer Simulation of Turbocharged Aftercooled Gasoline Engine

2006 ◽  
Author(s):  
Shahabaddin Kharazmi ◽  
Ali Hajilouy-Benisi ◽  
Ali Asghar Mozafari
Keyword(s):  
Computer Simulation ◽  
Diesel Engines ◽  
Equivalence Ratio ◽  
Gasoline Engine ◽  
Air Flow ◽  
Computer Code ◽  
Experimental Results ◽  
Combustion Model ◽  
Gasoline Engines ◽  
Performance Curves

Turbocharging of gasoline engines has been improved less than diesel engines due to some difficulties, especially knock phenomena. They require wider air flow range and faster response too. A computer code is developed to simulate turbocharged gasoline engine behavior. A three zone combustion model is employed. Different performance curves at speed and equivalence ratio ranges are prepared. By this code naturally aspirated and turbocharged behavior are compared. A turbocharged aftercooled engine has been studied in various cases to complete the investigation. Some aftercooler effects are described experimentally. Modeling and experimental results are compared providing valuable achievements.

In-cylinder air-flow characteristics of different intake port geometries using tomographic PIV

2017 ◽  
Vol 29 (9) ◽  
pp. 095104 ◽  
Author(s):  
Avinash Kumar Agarwal ◽  
Suresh Gadekar ◽  
Akhilendra Pratap Singh
Keyword(s):  
Air Flow ◽  
Flow Characteristics ◽  
Intake Port ◽  
Tomographic Piv
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